CN101897111B - Variable control device - Google Patents
Variable control device Download PDFInfo
- Publication number
- CN101897111B CN101897111B CN2008801207986A CN200880120798A CN101897111B CN 101897111 B CN101897111 B CN 101897111B CN 2008801207986 A CN2008801207986 A CN 2008801207986A CN 200880120798 A CN200880120798 A CN 200880120798A CN 101897111 B CN101897111 B CN 101897111B
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- Prior art keywords
- switch
- control apparatus
- control
- variable control
- power
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- Expired - Fee Related
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M5/275—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/293—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
- H05B39/04—Controlling
- H05B39/041—Controlling the light-intensity of the source
- H05B39/044—Controlling the light-intensity of the source continuously
- H05B39/048—Controlling the light-intensity of the source continuously with reverse phase control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Massaging Devices (AREA)
- Control Of Eletrric Generators (AREA)
- Vehicle Body Suspensions (AREA)
- Electronic Switches (AREA)
Abstract
The invention relates to a variable control device (10) connected in series with an electrical load (12) to be controlled on one phase of an AC electrical circuit. The control device (10) comprises: two power switches (J1, J2), of the normally conducting JFET type, the gates (G) of which are connected together; two bias resistors (R1, R2), each bias resistor (R1, R2) being connected between the gate (G) and the source (S) of one of the power switches (J1, J2); and two control switches (M1, M2) controlled by a common control signal, each control switch (M1, M2) being connected in parallel with one of the bias resistors (R1, R2). Application to a dimmer.
Description
Technical field
The present invention relates to be responsible for utilizing the variable control apparatus of the variable voltage control electrical load that comes from AC single phase electric power networks (AC power).The present invention provides and application is arranged aspect the power controller of variable electric power or the electronic variable device (being also referred to as " dimmer ") can being in particular lamp (such as incandescent lamp) especially.
Background technology
Dimmer and electrical load are connected in series to control the phase of AC single phase electric power networks of the alternating voltage of common conveying 230V.Dimmer generally includes the electronic power switch of MOSFET type of transistor, is connected in series with load in order to change (commute) load (be connected or disconnect) according to the input control signal on the transistor gate.The advantage of this transistorlike is normally to disconnect, and namely (especially during electric power starting) maintains blocked state and non-conductive in the situation of control signal not having.For the silicon controlled rectifier in the speed change inverter (thyristor), these transistorized controls are easily finished by phase angle, and additional possibility is to block at any time (off-state or non-conductive state) these transistors.
Yet the major defect of these dimmers is the heat dissipations that produced during conduction state (closure state) by mosfet transistor.In fact, these transistors comprise the essence resistance (substantial resistance) under the conduction state, are approximately 100 milliohms.This heat dissipation is the shortcoming of restriction of the miniaturization of electric consumption and such dimmer.
The field-effect transistor that has electronic power switch, particularly JFET type (associating field-effect transistor) with low heat dissipation.In fact their resistance during conduction state be significantly less than the resistance of the mosfet transistor of reciprocity size.But, as the transistorized grid-source voltage V of these JFET
GSWhen equalling zero (when perhaps having zero control signal), they are conduction (being commonly referred to " normal ON " or normally closed) usually, that is, they are in conduction state.Must apply enough negative grid-source voltage V
GSSo that their conversion are in blocked state (or off-state).This feature obviously may produce work and safety problem.
Current, the JFET transistor of normal ON type is made by carborundum (SiC) usually, but also can use wide bandgap material (being also referred to as the material with large band gap), namely when conduction state, present low resistance Rdson and can support suitable voltage (up to 1000V), for example gallium nitride (GaN).
Summary of the invention
Therefore, the objective of the invention is design and use the transistorized variable control apparatus of normal ON JFET, the efficiency of particularly being convenient to minimize electric consumption and increasing them, but when not having power supply or not having control signal, but can not produce work or safety problem.
Another object of the present invention is by using carborundum (SiC) power transistor to increase reliability and the useful life of power controller or dimmer, because carborundum technology (SiC) is than silicon technology (Si) robust more, particularly for temperature and overvoltage behavior.
Another object of the present invention is a kind of automatic control equipment of design, its only need alternating current network that this equipment connection arrives one as single power supply.
For this reason, the invention describes a kind of variable control apparatus of going up mutually and wanting controlled electrical load to be connected in series at one of alternating current network.This control appliance comprises: two JFET power switchs of normal ON type, and their grid links together; Two means of polarization resistors, each means of polarization resistors are connected between the grid and source electrode of one of power switch; Two control switchs by common control signal control, each control switch respectively with means of polarization resistors in one be connected in parallel, wherein, two power switch (J1, one of J2) drain electrode is connected to one of alternating current network and goes up mutually, and the drain electrode of another of two power switchs (J1, J2) is connected to an end of electrical load.
According to a feature, this power switch is gallium nitride or carborundum JFET transistor.
According to a feature, this variable control apparatus also comprises the charging circuit of energy capacitor for subsequent use and this capacitor, and this capacitor has the first terminal of the grid that is connected to this power switch.This capacitor is used for for carrying the power electronics of this control signal, so that variable control apparatus can be fully automatically.
According to another feature, this control switch is mosfet transistor, and its source electrode links together and is connected to the grid of this power switch, and its drain electrode is connected respectively to the source electrode of corresponding power switch.Replacedly, this control switch is MEMS micro-actuator (micro-electromechanical switch), and its coil is by this control signal power supply.
Because the lower heat dissipation of power transistor, the present invention will be preferably not only so that can reduce the power controller that comprises such control appliance or dimmer volume (largely miniaturization) and also will be so that can utilize the larger load of equipment control of equivalent size.
Description of drawings
Further feature and advantage will appear in the embodiment of back, simultaneously with reference to the embodiment that provides as example and represented by accompanying drawing, wherein:
Fig. 1 represents the first simple side of implementing according to variable control apparatus of the present invention;
Fig. 2 represents the second embodiment according to variable control apparatus of the present invention;
Fig. 3,4 and 5 shows flowing of electric current in the equipment of Fig. 2 during different job steps.
Embodiment
With reference to figure 1, variable control apparatus 10 is responsible for utilizing variable voltage control electronic load 12, from control signal S.Control appliance 10 is connected in series to the conveying voltage U with load 12
MThe only phase of AC power, and do not need to be connected to the mid point (neutral point) of this AC power, this so that its use in family's automatic electric appliance for example be very easy to and be simple.Such equipment is particularly suitable for use in the power controller, for example is used for the dimmer (for example by the ac power supply of 230V and have power less than or equal to 1000W) of the electrical load of control such as lamp.
The grid G of power switch J1 and J2 is connected to each other.Switch J1 and the J2 head shovel (head-spade) of connecting with load 12 is installed, so that the drain D of switch J1 is connected to AC power, the drain D of switch J2 is connected to an end of load 12, and the source S of switch J1 and J2 links together by means of polarization resistors R1 and R2.Thereby each resistor R1 and R2 are connected between the grid and source electrode of power switch J1 and J2.Preferably, switch J1 is identical with J2, and resistor R1 is identical with R2.
Each control switch M1 and M2 respectively with means of polarization resistors R1 and R2 in one be connected in parallel.Control switch M1 and M2 can be the electromechanical components such as miniature relay or micro-electromechanical switch (MEMS), perhaps the semiconductor electronic part such as the low-voltage mosfet transistor preferably.In the situation of electromechanical component, control signal S is connected to the control coil of M1 and M2.In the situation of semiconductor electronic part, control signal S is connected to the grid of parts M1 and M2 via grid resistor.
The mode of operation of the embodiment of Fig. 1 is as follows:
When A. beginning, suppose supply voltage U
MEqual zero, so switch JFET J1 and J2 grid separately and the voltage V between the source electrode
GS1And V
GS2Equal zero, thereby switch JFET J1 and J2 all closed (conduction state), because they are normal ON types.Also there is not control signal S in supposition, thereby control switch Mi and M2 are in off-state (blocked state).
B. as supply voltage U
MDuring appearance, for example during so-called positive arch (arch), electric current I begins flowed among J1, R1, R2, the J2 by the arrow I indicated direction among Fig. 1.This electric current I very rapidly produces positive voltage V between the terminal of resistor R1
R1Because based on the V that makes up
R1=-V
GS1, positive voltage V then
R1Between the grid of JFET switch J1 and source electrode, produce negative voltage V
GS1Select the value of R1 so that V
GS1Voltage reaches latch voltage (or pinch off (pinching) voltage) V fast
P, so that switch J1 transforms to off-state (non-conductive state).Then the electric current that flows through resistor R1 descends, until V
GS1Reach again latch voltage V
POn, this so that JFET switch J1 again a little the conduction.Thereby electric current I will increase again, until V
R1Again arrive latch voltage V
P, in order to again block J1, etc.During this positive arch, JFET switch J1 is installed in the power supply, thereby electric current depends on resistor R1 and latch voltage V
P
Thereby the configuration of J1 and R1 causes, and during positive arch, electric current I is less than or equal to the residual current I of low-down value
Min, be not enough to correctly power for load 12 very, particularly be not enough to turn-on lamp.For example, if if R1=10K Ω and V
P=-10V, then I
Min=1mA.
In addition, during this positive arch, Zener diode Z1 gets clogged and Zener diode Z2 conducting.Thereby the voltage V between the terminal of Z2
Z2Equal the direct current pressure drop (being typically about 0.7V) of Zener diode, this is so that can limit voltage V between the terminal of R2
R2Thereby, deboost V
GS2On the occasion of, to avoid the gate problems of switch J2.
C. during ensuing negative arch, electric current I changes direction, and the class of operation of resistor R2 and JFET switch J2 is similar to described above.The electric current I that flows on the negative direction very rapidly produces positive voltage V between the terminal of resistor R2
R2Because based on the V that makes up
R2=-V
GS2, positive voltage V then
R2Between the grid of JFET switch J2 and source electrode, produce negative voltage V
GS2Select the value of R2 so that V
GS2Voltage reaches latch voltage V fast
P, so that switch J2 transforms to off-state (non-conductive state).During this negative arch, JFET switch J2 is installed in the power supply, thereby electric current depends on resistor R2 and latch voltage V
P
Thereby in the situation that does not have control signal S, the electric current I that flows into load 12 forever keeps below or equals I
Min, this although use normal ON power switch, can not power for electrical load in the situation that does not have any control signal S so that can guarantee safely yet.
D. when control signal S occurred, control switch M1 and M2 became closure, and this is so that bypass (shunt) resistor R1 and R2.Thereby, voltage V
R1And V
R2Become substantially equal zero (only being about tens millivolts), because V
R1=R
OnM1* I, wherein R
OnM1Corresponding to the low-down resistance under the conduction state of low-voltage mosfet transistor M1, I is corresponding to the electric current that flows into load 12.This also causes the grid-source voltage V of switch J1 and J2
GS1And V
GS2Be forced to zero.Therefore, in each direction of electric current I, switch J1 and J2 all transform to conduction state and are electrical load 12 power supplies.
According to the preferred embodiment of describing among Fig. 2, control appliance 10 also comprises capacitor C, and it is for subsequent use to be used for the energy relevant with capacitator charging circuit.Capacitor C has the first end of the grid that is connected to power switch J1 and J2.The charging circuit of capacitor C comprises two charging diode D1 and D2, and each diode D1 and D2 negative electrode separately are connected to the second end of capacitor C, and diode D1 and D2 anode separately is connected respectively to the drain electrode of power switch J1 and J2.In addition, the charging current of capacitor C can be positioned at the possible booster resistor R in the charging circuit that is connected in series with diode D1 and D2
AThe (not shown) restriction.
The mode of operation of embodiment among Fig. 2 is as follows:
Supply voltage U when A. supposition begins
MEqual zero, so switch JFET J1 and J2 grid separately and the voltage V between the source electrode
GS1And V
GS2Equal zero, thereby switch J1 and J2 all closed (conduction state), because they are normal ON types.Also there is not control signal S in supposition, thereby control switch M1 and M2 are in off-state (blocked state).
B. as supply voltage U
MDuring appearance, for example during so-called positive arch, electric current I begins flowed among J1, R1, R2, the J2 by the arrow I indicated direction among Fig. 3.This electric current I very rapidly produces positive voltage V between the terminal of resistor R1
R1Because based on the V that makes up
R1=-V
GS1, positive voltage V then
R1Between the grid of JFET switch J1 and source electrode, produce negative voltage V
GS1Select the value of R1 so that V
GS1Voltage reaches latch voltage (or pinch-off voltage) V fast
P, so that switch J1 transforms to off-state (non-conductive state).Thereby for the operation of Fig. 1, the electric current that flows into J1 is less than or equal to the residual current I of low-down value
MinOn the other hand, during the positive arch of electric current, diode D1 conduction and diode D2 block.Thereby electric current I is derived from diode D1, and can charge to capacitor C.Then electric current I flows through R2, and this applies positive V between the grid of JFET switch J2 and source electrode
GS2Voltage.Thereby as long as capacitor C is not charged fully, then J2 just becomes conduction.Automatically, the charging current of capacitor C is by resistor R2 and by the possible booster resistor R that is arranged in charging circuit
A(not shown) restriction so that electrical load 12 is only by the low current power supply, and significant voltage can not occur between its terminal.
C. during ensuing negative arch, electric current I changes direction, and the class of operation of resistor R2 and JFET switch J2 is similar to (referring to Fig. 4) described above.The electric current I that flows on the negative direction very rapidly produces positive voltage V between the terminal of resistor R2
R2Because based on the V that makes up
R2=-V
GS2, positive voltage V then
R2Produce negative voltage V
GS2, V
GS2Block JFET switch J2.Diode D2 conduction and diode D1 block.Thereby electric current I is derived from diode D2, and can be capacitor C charging.Then electric current I flows through R1, and this applies positive V between the grid of JFET switch J1 and source electrode
GS1Voltage.Thereby as long as capacitor C is not charged fully, J1 just becomes conduction.
Thereby the step B of above-mentioned mode of operation and C are so that for capacitor C charging, because electric current I always flows through C with identical direction.When the charging of capacitor C was finished, the voltage between the terminal of capacitor C no longer changed, and was stabilized in close to power supply U
MThe value of crest voltage.
D. when control signal S occurred, control switch M1 and M2 became closure (referring to Fig. 5), and this is so that bypassed resistor R1 and R2.Thereby, voltage V
R1And V
R2Become substantially and equal zero, the result is the grid-source voltage V of force switch J1 and J2 also
GS1And V
GS2Be zero.Therefore, in each direction of electric current I, switch J1 and J2 all transform to conduction state and are electrical load 12 power supplies.
This variable control apparatus also comprises control electronic circuit (not shown), the common control signal S that comes from control command is carried in expection, this control command for example comes from several position button in the situation of dimmer, perhaps come from any other outer member.According to traditional approach, in order to provide variable voltage to electrical load 12, control signal S may only appear at power supply U
MThe part of each arc on.
Because the present invention, the control electronic circuit is preferably provided the capacitor C power supply of energy source by the supply module (flyback or SMPS type) to the control electronic circuit.Thereby variable control apparatus is automatically fully, and moves without any need for energy source (battery), except the AC power U of electrical load 12
MOne mutually outside.Similarly, this equipment does not need the phase point of AC single phase electric power networks and the connection between the mid point.Described similar to top mode of operation, the supply voltage U of AC power
MOne occurs, and capacitor C just is re-charged electricity.In practice, only several half-waves enough are capacitor C charging just, because control not lot of energy (only about 1W) of electronic circuit.
But if there be (the step D of the mode of operation of top Fig. 5) forever in control signal S, then capacitor C no longer is powered, thereby can discharge after long-time.Why Here it is the invention provides, periodically (for example, each half-wave of electric current I), control signal S does not exist in the short time, in order within this short time, disconnect control switch M1 and M2, in order to keep the electric charge (top step B and C) of capacitor C.This short time is defined as not damaging the operation of electrical load 12, any perceptible decline that does not particularly produce the intensity of the lamp of being ordered.
The invention enables and can use control switch M1 and the M2 that utilizes low-voltage mosfet transistor (being the current voltage that is lower than 60V that has) to realize, this has given have low-down resistance under the conduction state advantage of (only being several approximately milliohms).In fact, when control signal S is cut off to disconnect M1 and M2, appear at the source electrode of switch M1 and M2 and the voltage V between the drain electrode
DSAlways equal the voltage between the terminal of resistor R1 and R2, and the voltage between the terminal of resistor R1 and R2 itself is the pinch-off voltage V by JFET switch J1 and J2
PCause.In the situation of the current peak between elementary period, voltage V
DSBy Zener diode Z1 and Z2 restriction, maximum is for approximately for example 15 arriving 20V, rather than AC network U
MCrest voltage 230V.
Can use the mosfet transistor of such low-voltage so that greatly reduce heat dissipation and the larger possibility of dimmer miniaturization is provided.This advantage also exists when control switch M1 and M2 are dynamo-electric MEMS micro-actuator, because their resistors under conduction state are also very low.
Claims (11)
1. go up mutually and the variable control apparatus of wanting controlled electrical load (12) to be connected in series at one of alternating current network for one kind, it is characterized in that this control appliance (10) comprising:
Two JFET power switchs (J1, J2) of normal ON type, their grid links together;
Two means of polarization resistors (R1, R2), each means of polarization resistors are connected between the grid and source electrode of one of power switch (J1, J2);
By two control switchs (M1, M2) of common control signal (S) control, each control switch respectively with means of polarization resistors (R1, R2) in one be connected in parallel,
Wherein, the drain electrode of one of two power switchs (J1, J2) is connected to one of alternating current network and goes up mutually, and another drain electrode of two power switchs (J1, J2) is connected to an end of electrical load.
2. variable control apparatus according to claim 1 is characterized in that, this power switch (J1, J2) is carborundum JFET transistor.
3. variable control apparatus according to claim 1 is characterized in that, this power switch (J1, J2) is gallium nitride JFET transistor.
4. variable control apparatus according to claim 1, it is characterized in that, this variable control apparatus (10) also comprises the charging circuit of energy capacitor for subsequent use (C) and this capacitor, this capacitor (C) has the first terminal of the grid that is connected to this power switch (J1, J2).
5. variable control apparatus according to claim 4, it is characterized in that, this charging circuit comprises two diode (D1, D2), the negative electrode of each diode is connected to the second terminal of capacitor (C), and the anode of each diode is connected respectively to one drain electrode of power switch (J1, J2).
6. variable control apparatus according to claim 4 is characterized in that, this control appliance (10) also comprises electronic control circuit, and it is carried this common control signal (S) and is powered by this capacitor (C).
7. variable control apparatus according to claim 1, it is characterized in that, this control switch (M1, M2) be mosfet transistor, its source electrode links together and is connected to power switch (J1, J2) grid, its drain electrode is connected respectively to the source electrode of corresponding power switch (J1, J2).
8. variable control apparatus according to claim 7 is characterized in that, the grid of each mosfet transistor (M1, M2) is connected to control signal (S) via grid resistor.
9. variable control apparatus according to claim 1 is characterized in that, this control switch (M1, M2) is the MEMS micro-actuator, and its coil is powered by control signal (S).
10. variable control apparatus according to claim 1 is characterized in that, this control appliance (10) comprises two restriction Zener diodes (Z1, Z2) that are connected in parallel with means of polarization resistors (R1, R2).
11. a power controller that is used for control electrical load (12) is characterized in that it comprises according to any one the described variable control apparatus in the aforementioned claim.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0758338 | 2007-10-16 | ||
| FR0758338A FR2922381B1 (en) | 2007-10-16 | 2007-10-16 | VARIABLE CONTROL DEVICE |
| PCT/EP2008/063661 WO2009050124A1 (en) | 2007-10-16 | 2008-10-10 | Variable control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101897111A CN101897111A (en) | 2010-11-24 |
| CN101897111B true CN101897111B (en) | 2013-02-27 |
Family
ID=39350183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008801207986A Expired - Fee Related CN101897111B (en) | 2007-10-16 | 2008-10-10 | Variable control device |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2198507B1 (en) |
| CN (1) | CN101897111B (en) |
| AT (1) | ATE542285T1 (en) |
| FR (1) | FR2922381B1 (en) |
| WO (1) | WO2009050124A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2931593B1 (en) * | 2008-05-20 | 2010-07-30 | Schneider Electric Ind Sas | CAPACITIVE TYPE POWER SUPPLY SYSTEM |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5684376A (en) * | 1994-01-18 | 1997-11-04 | Leviton Manufacturing Co., Inc. | Solid state motor speed control |
| US6157049A (en) * | 1996-03-14 | 2000-12-05 | Siemens Aktiengesellschaft | Electronic device, in particular for switching electric currents, for high reverse voltages and with low on-state losses |
| CN1645733A (en) * | 2004-01-23 | 2005-07-27 | 惠普开发有限公司 | Alternating current switching circuit |
| CN1846183A (en) * | 2003-09-05 | 2006-10-11 | 皇家飞利浦电子股份有限公司 | Power controller |
-
2007
- 2007-10-16 FR FR0758338A patent/FR2922381B1/en not_active Expired - Fee Related
-
2008
- 2008-10-10 CN CN2008801207986A patent/CN101897111B/en not_active Expired - Fee Related
- 2008-10-10 EP EP08840156A patent/EP2198507B1/en not_active Not-in-force
- 2008-10-10 WO PCT/EP2008/063661 patent/WO2009050124A1/en active Application Filing
- 2008-10-10 AT AT08840156T patent/ATE542285T1/en active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5684376A (en) * | 1994-01-18 | 1997-11-04 | Leviton Manufacturing Co., Inc. | Solid state motor speed control |
| US6157049A (en) * | 1996-03-14 | 2000-12-05 | Siemens Aktiengesellschaft | Electronic device, in particular for switching electric currents, for high reverse voltages and with low on-state losses |
| CN1846183A (en) * | 2003-09-05 | 2006-10-11 | 皇家飞利浦电子股份有限公司 | Power controller |
| CN1645733A (en) * | 2004-01-23 | 2005-07-27 | 惠普开发有限公司 | Alternating current switching circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101897111A (en) | 2010-11-24 |
| ATE542285T1 (en) | 2012-02-15 |
| FR2922381B1 (en) | 2010-02-26 |
| WO2009050124A1 (en) | 2009-04-23 |
| FR2922381A1 (en) | 2009-04-17 |
| EP2198507B1 (en) | 2012-01-18 |
| EP2198507A1 (en) | 2010-06-23 |
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